Liquid crystal display panel and manufacturing method thereof

ABSTRACT

A liquid crystal device having a plurality of pixels defined on a liquid crystal layer by a plurality of first and second electrodes that are electrically connected to non-linear devices, the first electrode and non-linear devices being provided on the inside of a first substrate, and the second electrodes being provided on the inside of a second substrate. In order to provide a flat underlying surface for the first electrodes while enabling the first electrodes to overly the non-linear devices (and with them the effective areas of the pixels), an insulating layer is provided under the first electrodes immediately adjacent to the non-linear devices.

This is a divisional application of Ser. No. 796,897, filed Nov. 12, 1985, now abandoned.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a liquid crystal display panel which employs liquid crystal display devices each of which has a nonlinear element having a diode characteristic and a liquid crystal element. The invention also pertains to methods for the manufacture of the liquid crystal display panel.

2. Description of the Prior Art

Heretofore there has been proposed a display panel which employs m×n (where n≧1 and m≧1) liquid crystal display devices M₁₁ to M_(1n), M₂₁ to M_(2n), . . . and M_(m1) to M_(mn). The liquid crystal display device M_(ij) (where i=1, 2 . . . n, j=1, 2 . . . n) has a nonlinear element U_(ij) having a diode characteristic and a liquid crystal element L_(ij).

In this display panel, the liquid crystal display device M_(ij) is connected to a row conductive layer F_(i) and a column conductive layer H_(j) at their intersection.

With such a display panel, an image display can be provided by driving the liquid crystal devices M₁₁ to M_(mn) using the row conductive layers F_(i) to F_(m) and the column conductive layers H₁ to H_(n).

However, the conventional display panel is very complex in the structure of the nonlinear element U_(ij), in the structure of the liquid crystal element L_(ij) and in the structure for connecting the liquid crystal display device M_(ij) to the row conductive layer Fi and the column conductive layer H_(j).

On this account, the prior art liquid crystal display panel is difficult to manufacture and expensive.

Furthermore, it is difficult to arrange m×n liquid crystal display devices M₁₁ to M_(mn) in an (m×n) matrix form with a high density, so that resolution of the image display is relatively low.

SUMMARY OF THE INVENTION

It is therefore an object of the present invention to provide a novel liquid crystal display panel which employs liquid crystal display devices each of which has a liquid crystal element and a nonlinear element having a diode characteristic and connected in series with the nonlinear element.

Another object of the present invention is to provide novel methods for the manufacture of such liquid crystal display panel.

In accordance with an aspect of the present invention, the liquid crystal display panel comprises (a) first and second substrate members disposed opposite at a predetermined distance in substantially parallel relation to each other and (b) liquid crystal filled between the first and second substrate members.

The first substrate member comprises (a) a first substrate having an insulating surface, (b) a plurality m of stripe-like conductive layers F₁, F₂ F₃ . . . F_(m) arranged on the first substrate in the column direction and extending in the row direction, (c) a plurality n of layers Q_(i1) to Q_(in) arranged on the conductive layer F_(i) (where i=1, 2 . . . m) in the row direction and having substantially the same width as the later, (d) a conductive layer E_(ij) being formed on the layer Q_(ij) (where j=1, 2 . . . m) and having the same width and length as the later, (e) a portion D_(ij) of the conductive layer F_(i) underlying the layer Q_(ij), the layer Q_(ij) and the conductive layer E_(ij) constituting a laminate member A_(ij), (f) insulating layers K_(ij) and K_(ij) ' each formed over the entire areas of side faces of the laminate member A_(ij) (or (f)' a insulating layers K_(i) formed on the first substrate and extending between the laminate member A_(i1) to A_(in) and A.sub.(i+1) to A.sub.(i+1)n) and (g) a conductive layer C_(ij) formed on the first substrate and corresponding to the laminate member A_(ij), the conductive layer C_(ij) having substantially the same width as the length of the laminate member A_(ij) and extending on the side face of the insulating layer K_(ij) and onto the insulating layer K_(ij), the laminate member A_(ij) and the insulating layer K_(ij) ', and the both side faces defining the width of the conductive layer C_(ij) being substantially in agreement with the both side faces defining the length of the laminate member A_(ij) (or (g)' a conductive layer C_(ij) formed on the insulating layer K_(i) and corresponding to the laminate member A_(ij), the conductive layer C_(ij) having substantially the same width as the length of the laminate member A_(ij) and extending onto the laminate member A_(ij), and the both side faces defining the width of the conductive layer C_(ij) being substantially in agreement with the both side faces defining the length of the laminate member A_(ij)).

The second substrate member comprises (a) a second substrate having an insulating surface, and (b) a plurality n×q (where q is an integer equal to or greater than 1) of stripe-like conductive layers H₁₁, H₁₂ . . . H_(1q) ; H₂₁, H₂₂ . . . H_(2q) ; . . . and H_(n1), H_(n2) H_(n3) . . . H_(nq) sequentially arranged on the second substrate in the row direction and extending in the column direction, the conductive layers H_(j1) to H_(jq) being opposite the conductive layers C_(1j) to C_(mj).

The laminate member A_(ij) forms a nonlinear element U_(ij). The conductive layer H_(jr) (where r=1, 2, . . . q), a portion B_(ijr) of the conductive layer C_(ij) confronting the conductive layer H_(jr) and the portion of the liquid crystal filled between the conductive layer H_(jr) and the portion B_(ijr) forms a liquid crystal element L_(ijr).

According to such a liquid crystal display panel of the present invention, the liquid crystal element L_(ijr) can be driven by applying a driving signal to the liquid crystal display element M_(ijr) via the row conductive layer F_(i) and the column conductive layer H_(jr). Accordingly, the liquid crystal display panel provides an image display.

Since the liquid crystal element L_(ijr) is formed by the conductive layer H_(jr), the portion B_(ijr) of the conductive layer C_(ij) facing the conductive layer H_(jr) and the portion of the liquid crystal between the conductive layer H_(jr) and the portion B_(ijr), as mentioned above, the liquid crystal element L_(ijr) is simple in structure.

Furthermore, the nonlinear element U_(ij) is formed by the aforementioned laminate member A_(ij), and hence is simple in construction.

The liquid crystal display panel of the present invention is simple-structured in that the liquid crystal display element L_(ijr) and the nonlinear element U_(ij) are interconnected in series via the conductive layer C_(ij) to constitute the liquid crystal display device M_(ijr) and in that the liquid crystal display device M_(ijr) is connected at one side to the row conductive layer F_(i) forming the other electrode of the nonlinear element U_(ij) and at the other side to the column conductive layer H_(jr) forming the other electrode of the liquid display element L_(ijr).

Accordingly, the liquid crystal display panel of the present invention is far simpler in structure than is conventional, in consequence of which m×(m×q) display crystal elements M₁₁₁ to M_(mnq) can be arranged in an m×(n×q) matrix form with a high density, ensuring to provide an image display with high resolution.

Moreover, according to the present invention, the liquid crystal display panel which has the aforesaid excellent feature can be produced by a manufacturing method of the present invention which includes a step of (A) preparing a first substrate member, (B) preparing a second substrate member, (C) turning the second substrate member upside down and disposing the first and second substrate members in opposing and substantially parallel relation to each other and (D) filling liquid crystal in the gap defined by the first and second substrate members.

The step of preparing a first substrate member which includes the steps of (a) forming, on a first substrate, a laminate member A composed of a conductive layer F, a layer Q and a conductive layer E laminated in this order, (b) patterning the laminate member A into a plurality m of stripe-like laminate members A₁ to A_(m) sequentially arranged in the column direction and extending in the row direction, (c) depositing a insulating layer K having a thickness smaller than the laminate members A₁ to A_(m) over the entire area of the first substrate to cover the laminate members A₁ to A_(m) (or (C)' depositing a insulating layer K having a thickness larger than the laminate members A₁ to A_(m) over the entire area of the first substrate to cover the laminate members A₁ to A_(m)), (d) selectively etching away the insulating layer K to form on both sides of the laminate member A_(i) (where i=1, 2 . . . m) defining the width of the second laminate member A_(i) (or (d)' selectively etching away the insulating layer K to form an insulating layer K_(i) extending between the laminate members A_(i) and A.sub.(i+1) and flush therewith) (e) forming a conductive layer C over the entire area of the first substrate to cover the laminate members A₁ to A_(m) and the insulating layers K₁ to K_(m) and K₁ ' to K_(m) (or (e)' forming a conductive layer C over the entire area of the first substrate to cover the laminate members A₁ to A_(m) and the insulating layers K₁ to K_(m)) and (f) patterning the conductive layer C, the second conductive layers E₁ to E_(m) and the layers Q₁ to Q_(m) to form conductive layers C_(i1) to C_(in) extending from the substrate onto the insulating layer K_(i) and the laminate member A_(i) passing on the side face of the insulating layer K_(i), layers Q_(i1) to Q_(in) and conductive layers E_(i1) to E_(in), a portion D_(ij) of the conductive layer F_(i) underlying the layer Q_(ij), the layer Q_(ij) and the conductive layer E_(ij) constituting the laminate member A_(ij) (or (f)' patterning the conductive layer C, the second conductive layers E₁ to E_(m) and the layers Q₁ to Q_(m) to form conductive layers C_(i1) to C_(in) extending from the insulating layer K_(i) onto the laminate member A_(i), layers Q_(i1) to Q_(in) and conductive layers E_(i1) to E_(in), a portion D_(ij) of the conductive layer F_(i) underlying the layer Q_(ij), the layer Q_(ij) and the conductive layer E_(ij) constituting the laminate member A_(ij)).

The step of preparing a second substrate member includes the steps of forming, on a second substrate having an insulating surface, a plurality n×q (where q is an integer equal to or greater than 1) conductive layers H₁₁, H₁₂ . . . H_(1q) ; H₂₁, H₂₂ . . . H_(2q) ; H₃₁, H32. . . H_(3q) ; and H_(n1), H_(n2) . . . H_(nq) sequentially arranged in the row direction and extending in the column direction, the conductive layers H_(j1), H_(j2), . . . and H_(iq) corresponding to the conductive layers C_(1j), C_(2j), . . . and C_(mj) of the first substrate member.

The manufacturing method of the present invention requires only three masks for the fabrication of the liquid crystal display, that is, one for the formation of the laminate member A₁ to A_(m), one for the formation of the conductive layers C₁₁ to C_(mn) and the laminate members A₁₁ to A_(mn) and one for the formation of the conductive layers H₁₁ ˜ H_(1r) to H_(n1) ˜H_(nr).

Accordingly, the liquid crystal display panel having the abovesaid advantages can easily be manufactured at low cost.

Other objects, features and advantages of the present invention will become more fully apparent from the following detailed description taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a plan view schematically illustrating an embodiment of the liquid crystal display panel of the present invention;

FIGS. 2, 3, 4 and 5 are sectional views respectively taken on the lines II--II, III--III, IV--IV and V--V in FIG. 1;

FIG. 6 is a graph showing the voltage (V)current(I) characteristics of the nonlinear element used in the liquid crystal display panel of the present invention depicted in FIGS. 1 to 5, in comparison with the V-I characteristics of a conventional nonlinear element;

FIG. 7 is a graph showing a part of the V-I characteristics depicted in FIG. 6;

FIG. 8 is an electrical connection diagram of the liquid crystal display panel of the present invention shown in FIGS. 1 to 5;

FIGS. 9 to 14 are a diagrams for explaining the manufacture of the liquid crystal display panel by the method of the present invention;

FIG. 15 is a plan view illustrating another embodiment of the liquid crystal display panel of the present invention;

FIGS. 16, 17 and 18 are sectional views respectively taken on the lines XVI--XVI, XVII--XVII, XVIII--XVIII and XIX--XIX in FIG. 15;

FIG. 20 is an electrical connection diagram of the liquid crystal display panel of the present invention shown in FIGS. 15 to 19; and

FIGS. 21 to 26 are diagrams for explaining the manufacture of the liquid crystal display panel shown in FIGS. 15 to 19 by the method of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1 to 5 illustrate an embodiment of the liquid crystal display panel of the present invention, in which a substrate 1 has an insulating surface. The substrate 1 is formed of, for instance, alkaline free glass.

The substrate 1 has sequentially arranged thereon in column direction a plurality m of row conductive layers F₁, F₂ . . . F_(m). The row conductive layer F_(i) may preferable be composed of a layer 2 formed of, for example, aluminum and a non-transparent layer 3 formed of, for instance chromium.

The row conductive layer F_(i) has sequentially formed thereon a plurality of n layers Q_(i1), Q_(i2) . . . Q_(in) each of which is formed, for example, non-singlecrystal semiconductor. The layers Q_(i1), Q_(i2) . . . Q_(in) have same width as the row conductive layer F_(i).

The layer Q_(ij) (where i=1, 2 . . . m and j=1, 2 . . . n) may have, for example, an n-i- n type structure composed of an n-type layer, an i-type layer and an n-type layer, an n-i-p (or p⁻)-i-n type structure composed of an n -type layer, an i-type layer, a p(or p⁻)-type layer, an i-type layer and an n-type layer, a p-i-p type structure composed of a p-type layer, an i-type layer and a p-type layer, or a p-i-n(or n⁻)-i-p type structure composed of a p-type layer, an i-type layer, an n(or n⁻)-type layer, an i-type layer and an p-type layer. The layer Q_(ij) also may be only a very thin insulating layer which may pass tunnel current. But FIGS. 1 to 5 show the case where the layer Q_(ij) has the n-i-n type structure. For the sake of brevity, the following description will be made in connection with the case where the layer Q_(ij) has the n-i-n type structure.

The layer Q_(ij) has an n-type non-single-crystal silicon layer 21 formed on the row conductive layer F_(i), an i-type layer 22 of non-single-crystal semiconductor formed on the layer 21 and an n-type non-single-crystal silicon layer 23 formed on the layer 22. The layer 22 is formed principally of silicon but contains carbon (C), nitrogen (N) or oxygen (O) in an amount of 1/10 or less relative to the silicon, and hence is formed of non-singlecrystal semiconductor expressed by Si_(x) C_(1-x) (where 0<x<1).

The layer Q_(ij) is covered over the entire area of its top surface with a conductive layer E_(ij). The conductive layer E_(ij) is formed of, for instance, chromium.

The part of the conductive layer F_(i) underlying the layer Q_(ij), the layer Q_(ij) and the conductive layer E_(ij) make up a layer member A_(ij).

The layer member A_(ij) are covered over the entire area of its opposite side surfaces with insulating layers K_(ij) and K_(ij) ', respectively. The insulating layers K_(ij) and K_(ij) ' are formed of, for instance, silicon nitride or silicon oxide and have 0.1 to 0.5 μm in thickness.

The substrate 1 has arranged thereon in a matrix form m×n (where m>1, and n>1) conductive layers C₁₁ to C_(1n), C₂₁ to C_(2n), C₃₁ to C_(3n), . . . and C_(m1) to C_(mn).

The conductive layer C_(ij) (where i=1, 2, . . . m and j=1, 2, . . . n) is rectangular in shape and has a relatively large area, for example, 100 μm wide and 150 μm long.

The conductive layer C_(ij) extends on the layer member A_(ij) i.e. the conductive layer E_(ij) and the insulating layer K_(ij) and K_(ij) ' through the side surface of the insulating layer K_(ij) and make contact with the conductive layer E_(ij). The conductive layer C_(ij) has substantially same width as the long of the layer member A_(ij) i.e. the conductive layer E_(ij) and is formed of, for instance, chromium and is nontransparent. In this case, the opposing side surfaces of the conductive layer C_(ij), which determine the width of the conductive layer C_(ij) are substantially aligned with the opposing side surfaces of the layer member A_(ij), which determine the long of the layer member A_(ij).

Furthermore a relatively thin insulation protecting layer 25 is deposited on the substrate 1 to cover the conductive layer C₁₁ to C_(mn), the active layers A₁₁ to A_(1n), A₂₁ to A_(2n) . . . A_(m1) to A_(mn), the insulting layer K₁₁ to K_(mn) and K₁₁ ' to K_(mn) ' and parts of the row conductive layers F₁, F₂ . . . F_(m) which are not covered with the conductive layers C₁₁ to C_(1n), C₂₁ to C₂. . . C_(m1) to C_(mn).

The conductive layers F₁ to F_(m), the layer members A₁₁ to A_(mn), the insulating layers K₁₁ to K_(mn) and K₁₁ ' to K_(mn) ' and the conductive layers C₁₁ to C_(mn) make up a substrate member 7.

The substrate member 7 is formed, for example, as follows:

A conductive layer F which will ultimately form the row conductive layers F₁ to F_(m), a layer Q which will ultimately form the layers Q₁₁ to Q_(mn) and a conductive layer E which will ultimately form the conductive layers E₁₁ to E_(mn) are deposited in that order on the substrate 1, as shown in FIGS. 9A to 9E. The conductive layer F, the layer Q and the conductive layer E make up a layer member A which will ultimately form the layer members A₁₁ to A_(mn).

The conductive layer F may be formed by a known method, for instance, a sputtering or electron beam evaporation process.

The layer Q also may be formed by a known method, for example, a CVD, plasma CVD or photo CVD method.

In my experiment, the substrate 1 formed thereon the conductive layer F was loaded through a loading and unloading chamber into a first reaction chamber, wherein a glow discharge was produced over the substrate 1 at a high frequency of 13.56 MHz in an atmosphere containing silane SiH₄, phosphine PH₃ and hydrogen, with the substrate temperature held in the range of 200° to 250° C. As a result of this, an n-type microcrystalline silicon layer, which had a conductivity of 10⁻² to 10² (Ωcm)⁻¹ and contained hydrogen as a recombination center neutralizer, was deposited 300 to 1000 Å thick on the conductive layer F. Next, the substrate 1 was moved from the first reaction chamber into the next second reaction chamber, wherein a gas mixture of silane Si_(m) H_(2m+2) (where m=1, 2, 3, . . . ) (for example, SiH₄) and methyl silane SiH_(n) (CH₃)_(4-n) (where n=1, 2, 3) was discharged into a plasma, by which an i-type non-single-crystal silicon layer of Si_(x) C_(1-x) was deposited 0.2 to 1 μm thick on the n-type layer. After this, the substrate 1 was returned from the second reaction chamber to the first reaction chamber, wherein another n-type layer similar to the above n-type layer was deposited by the same method on the i-type non-single-crystal silicon layer, thus obtaining the laminate member Q having the n-i-n type structure.

The conductive layer E may also be formed by a known method, for instance, a sputtering or electron beam evaporation process.

Next, the layer member A is subjected to a known pattern process using a first mask, providing m layer members A₁ to A_(m) of the same pattern as row the conductive layers F₁ to F_(m), as shown in FIGS. 10A to 10E.

Next, a insulating layer K which will ultimately form the insulating layer K₁₁ to K_(mn) and K₁₁ ' to K_(mn) ' and which is relatively thin than the layer member A₁ to A_(m) is deposited by a known method, for example, plasma CVD method on the entire surface of the substrate 1 to cover the active layers A₁ to A_(m), as shown in FIGS. 11A to 11E.

Next, the insulating layer K is selectively etched away by a known method, for example, a plasma etching method to form insulating layers K_(i) and K_(i) ' on both sides of the laminate member A_(i) defining the width of the laminate member A_(i), as shown in FIGS. 12A to 12E.

Next, a conductive layer C is deposited on the entire area of the substrate 1 to cover the laminate member A₁ to A_(m) and the insulating layers K₁ to K_(m) and K₁ ' to K_(m) ' as shown in FIGS. 13A to 13E.

Next, the conductive layer C, the layer Q₁ to Q_(m) and the conductive layer E₁ to E_(m) of the layer members A₁ to A_(m) are patterned by a known method using a second mask into the conductive layers C₁₁ to C_(mn), the layers Q₁₁ to Q_(mn) and the conductive layers E₁₁ to E_(mn) as shown in FIGS. 14A to 14E. In this case, the conductive layer F₁ to F_(m) are not patterned. The layer Q_(ij), the part of the conductive layer F_(i) underlying the layer Q_(ij) and the conductive layer E_(ij) make up the laminate member A_(ij).

Next, the insulating layers K₁ to K_(m) and K₁ ' to K_(m) ' are selectively etched away by a known method into the insulating layer K₁₁ to K_(mn) and K₁₁ ' to K_(mn) '.

Next, the thin insulation protecting layer 25 is deposited on the entire surface of the substrate 1 to cover the conductive layers C₁₁ to C_(mn), the layer members A₁₁ to A_(mn), the insulating layers K₁₁ to K_(mn) and K₁₁ ' to K_(mn) ' and the part of the conductive layer F₁ to F_(m) which are not covered with the conductive layers C₁₁ to C_(nm).

Referring now back to FIGS. 1 to 5, another substrate member 11, which is different from the aforementioned substrate member 7 is provided.

The substrate member 11 has, on a substrate 12 corresponding to the substrate 1, a plurality of n×q (where q≧1, in this instance q=3) sequentially arranged column conductive layers H₁₁, H₁₂ and H₁₃ ; H₂₁, H₂₂ and H₂₃ ; . . . H_(n1), H_(n2) and H_(n3) which are arranged opposing relation to the conductive layers C₁₁ to C_(m1) ; C₁₂ to C_(m2) ; . . . C_(1n) to C_(mn), respectively and extend in the column direction. The column conductive layer H_(j1), H_(j2) and H_(j3) can be obtained by forming a conductive layer through a known method on the substrate 12 and then patterning the conductive layer through a third mask.

The column conductive layers H_(j1), H_(j2) and H_(j3) are covered over entire surfaces thereof with red, green and blue filters S_(j1), S_(j2) and S_(j3), respectively.

Furthermore, a insulation protecting layer 26 formed of, for instance, organic region is deposited on the entire surface of the substrate 12 by a known method, for example, coating to cover the filters S₁₁ to S_(n1), S₁₂ to S_(n2) and S₁₃ to S_(n3).

The substrate member 11 is disposed upside down by a suitable support means (not shown) in opposing relation to the top of the substrate member 7 in parallel thereto. In this instance, the conductive layers C_(1j) to C_(mj) of the substrate member 7 and the column conductive layers H_(j1), H_(j2) and H_(j3) of the substrate member 11 are held face-to face with each other.

A space defined by the substrate members 7 and 11 is filled with liquid crystal 13.

In the structure described above in conjunction with FIGS. 1 through 5, a part 14 of the conductive layer C_(i) j on the substrate 1 and a part 15 of the conductive layer H_(jr) (where r=1, 2, 3) on the substrate 12, which are face-to-face with each other and a part 16R of the liquid crystal 13 between the part 14 of the conductive layer C_(ij) and the part 15 of the conductive layer H_(jr) constitute a liquid crystal element L_(ijr) which employs the parts 14 and 15 as its electrodes B_(ijr) and B_(ijr) ', respectively.

When low voltages are applied across the part 14 serving as electrode B_(ijr) of the conductive layer C_(ij) and the part 15 serving as electrode B_(ijr) ' of the conductive layer H_(jr) ; the liquid crystal element L_(ije) remain opaque, but when high voltages are applied, it become transparent.

The layer member A_(ij) constitute a nonlinear element U_(ij) which employs the part 17 of the conductive layer F_(i) underlying the layer Q_(ij) and the conductive layer E_(ij) as its electrodes D_(ij) and D_(ij) ', respectively. The element U_(ij) presents such a nonlinear voltage(V)-current(A) characteristic curves 51 and 61 as shown in FIGS. 6 and 7. The element U_(ij) has an offset voltage which is intermediate between the voltage that makes the liquid crystal element L_(ijr) transparent and nontransparent, respectively.

The liquid crystal element L_(ijr) and the nonlinear element U_(ij) are connected in series with each other, and hence make up a liquid crystal display device M_(ijr).

According to the arrangement described above with respect to FIGS. 1 through 5, the electrode B_(ijr) of the liquid crystal element L_(ijr) and the electrode D_(ijr) ' of the nonlinear element U_(ij) are common each other. The electrode B_(ijr) ' of the liquid crystal elements L_(1jr) of the liquid crystal display devices M_(ijr) is connected to the column conductive layer H_(jr) and the electrode D_(ij) of the nonlinear element U_(ij) is connected to the conductive layer F_(i). Furthermore, the column conductive layer H_(j1), H_(j2) and H_(j3) are covered with the red, green and blue filters S_(j1), S_(j2) and S_(j3), respectively.

Therefore, according to the arrangement described above in connection with FIGS. 1 to 5, since the liquid crystal element L_(ijr) can be controlled to be transparent or nontransparent, respectively, by applying, through use of row and column decoders 51X and 51Y, across the liquid crystal display device M_(ij1), M_(ij2) and M_(ij3) via the conductive layers F_(i) and H_(j1), F_(i) and H_(j2), and F_(i) and H_(j3) red, as shown in FIG. 8, green and blue drive signals a color display can be provided

Accordingly, the liquid crystal display panel shown in FIGS. 1 to 5 can be provided a color image display.

FIG. 15 to 19 illustrate another embodiment of the liquid crystal display panel of the present invention.

In FIGS. 15 to 19 like parts corresponding to those in FIGS. 1 to 5 are identified by the same reference numerals and no detailed description will be given of them.

The liquid crystal display panel shown in FIGS. 15 to 19 has the same construction as depicted in FIGS. 1 to 5 except the following points:

The insulating layers K_(i1) to K_(in) and K.sub.(i+1)1 ' to K.sub.(i+1)n ' in FIGS. 1 to 5 are substituted with a insulating layer K_(i). The insulating layer K_(i) extends between the laminate members A_(i1) to A_(in) and A.sub.(i+1)1 to A.sub.(i+1)n and substantially flush therewith, therefor the conductive layer C_(ij) is formed on the insulating layer K_(i) and extends onto the laminate member A_(ij) and the insulating layer K.sub.(i-1).

Further, the column conductive layer H_(i1), H_(j2) and H_(j3) in FIGS. 1 to 5 are substituted with a column conductive layer H_(j), and therefor the liquid crystal display device M_(ij1), M_(ij2) and M_(ij3) are substituted with a liquid crystal display device M_(ij).

Furthermore, the filters S₁₁ to S_(n1), s₁₂ to S_(n2) and S₁₃ to S_(n3) are omitted.

According to the arrangement described above with respect to FIGS. 1 through 5, the electrode B_(ijr) of the liquid crystal element L_(ij) and the electrode D_(ij) ' of the nonlinear element U_(ij) are common to each other. The electrode V_(ij) ' of the liquid crystal elements L_(1j) of the liquid crystal display devices M_(ij) is connected to the column conductive layer H_(j) and the electrode D_(ij) of the nonlinear element U_(ij) is connected to the conductive layer F_(i). Therefore, according to the arrangement described above in connection with FIGS. 15 to 19, since the liquid crystal element L_(ij) can be controlled to be transparent or nontransparent, respectively, by applying, through use of row and column decoders 51X and 51Y, across the liquid crystal display device M_(ij), M_(ij) and M_(ij) via the conductive layers F_(i) and H_(j) drive signal a monocolor display can be provided.

Accordingly, the liquid crystal display panel shown in FIGS. 1 to 5 can be provided a monocolor image display.

The substrate member 7 depicted in FIGS. 15 to 19 can be manufactured, for example, as follows:

A conductive layer F which will ultimately form the conductive layers F₁ to F_(n), a layer laminate member which will ultimately form the layer laminate members Q₁₁ to Q_(mn) and a conductive layer E, which will ultimately form the conductive layers E₁₁ to E_(mn) are deposited in that order on the substrate 1, as shown in FIGS. 21A to 21E as in the case with the example shown FIGS. 9A to 9E. The conductive layer F, the non-single-crystal semiconductor layer Q and the conductive layer E make up a active layer member A which will ultimately form the active layer member A₁₁ to A_(mn) as described previously.

Next, the active layer member A is subjected to a known pattern process using a first mask, providing m layer members A₁ to A_(m) of the same pattern as the conductive layers F₁ to F_(m), as shown in FIGS. 22A to 22E, as is the case with the example shown in FIGS. 10A to 10E.

Next, a insulating layer K of photo resist which will ultimately form the insulating layer K_(i) is deposited by a known method, for example, a plasma CVD method on the entire surface of the substrate 1 to cover the layers A₁ to A_(m), as shown in FIGS. 23A to 23E.

Next, the insulating layer K is irradiated by light 30 without using any mask as shown in FIGS. 23A to 23B and then is developed into the insulating layer K_(i), as shown in FIGS. 25A to 24E.

Next, a conductive layer C is deposited on the entire area of the substrate 1 to cover the laminate member A₁ to A_(m) and the insulating layer K₁ to K_(m) as shown in FIGS. 25A to 25E.

Next, the conductive layer C, the conductive layers E₁ to E_(m) and the layers Q₁ to Q_(m) of the layer member A₁ to A_(m) are patterned by a known method using a second mask into the conductive layers C₁₁ to C_(mn), the layers Q₁₁ to Q_(mn) and the conductive layers E₁₁ to E_(mn) of the layer member A₁₁ to A_(mn), as shown in FIGS. 26A to 26E.

Next, the thin insulating layer 26 is deposited on the entire surface of the substrate 1 to cover the conductive layers C₁₁ to C_(mn), the layer members A₁₁ to A_(mn), the insulating layers K₁ to K_(m) and the parts of the conductive layers F₁ to F_(m) which are not covered with the conductive layers C₁₁ to C_(mn).

It will be apparent that the above embodiment should be construed as merely illustrative of the present invention and should not be construed as limiting the invention specifically thereto and that various modifications and variations may be effected without departing from the scope of the novel concepts of the invention. 

What is claimed is:
 1. A liquid crystal device having a plurality of pixels, said device comprising:a first substrate; a second substrate, at least one of said first and second substrates being transparent; a liquid crystal layer disposed between said first and second substrates; a plurality of non-linear device arranged on said first substrate in an array form; a plurality of first planar electrodes provided on the inside of said first substrate such that a portion of the planar electrodes extends over said non-linear devices, said first electrodes being electrically connected with said non-linear devices in one-to-one correspondence; a plurality of second electrodes on the inside of said second substrate; wherein said first and second electrodes define said pixels on said liquid crystal layer and act for imposing an electric field on a portion of said liquid crystal layer corresponding to each pixel; and wherein an insulating layer is provided under said first electrodes between adjacent said non-linear devices such that the thickness of the insulating layer is substantially the same height as the non-linear devices to provide a flat underlying surface for said first planar electrodes that is composed of the upper surfaces of said non-linear devices and said insulating layer, so that the effective areas of said pixels extend over said non-linear devices.
 2. The device of claim 11, wherein said non-linear devices are multilayered semiconductor devices, each of which is composed of an upper electrode contacting one of said first electrodes, a semiconductor layer, and a common lower electrode which is shared by a row of said semiconductor devices.
 3. A device of claim 1 wherein said second substrate is transparent.
 4. A device of claim 1 wherein said insulator is made of organic resin.
 5. A device of claim 4 wherein said organic resin is polymide.
 6. A device of claim 3 wherein said insulator is made of silicon oxide. 